(19)
(11) EP 0 664 822 A1

(12)

(43) Date of publication:
02.08.1995 Bulletin 1995/31

(21) Application number: 92921823.0

(22) Date of filing: 13.10.1992
(51) International Patent Classification (IPC): 
C08J 9/ 14( . )
A62D 1/ 08( . )
C07C 19/ 08( . )
C09K 3/ 30( . )
A62D 1/ 00( . )
C07C 9/ 08( . )
C09K 3/ 00( . )
C09K 5/ 04( . )
(86) International application number:
PCT/US1992/008714
(87) International publication number:
WO 1994/009082 (28.04.1994 Gazette 1994/10)
(84) Designated Contracting States:
DE ES FR GB IT NL

(71) Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
Wilmington Delaware 19898 (US)

(72) Inventor:
  • SHIFLETT, Mark, Brandon
    Newark, DE 19711 (US)

(74) Representative: Woodcraft, David Charles, et al 
BROOKES & MARTIN High Holborn House 52/54 High Holborn
London, WC1V 6SE
London, WC1V 6SE (GB)

   


(54) SUBSTANTIALLY CONSTANT BOILING COMPOSITIONS OF DIFLUOROMETHANE AND PROPANE